﻿<!DOCTYPE html>
<html>
<head>
  <title>Kanban Board</title>
  <!-- Copyright 1998-2020 by Northwoods Software Corporation. -->
  <meta name="description" content="An interactive Kanban board editor, a visual control used for organizing work items." />
  <meta name="viewport" content="width=device-width, initial-scale=1">

  <script src="../release/go.js"></script>
  <link href='https://fonts.googleapis.com/css?family=Lato:300,400,700' rel='stylesheet' type='text/css'>
  <script src="../assets/js/goSamples.js"></script>  <!-- this is only for the GoJS Samples framework -->
  <script id="code">

    // define a custom grid layout that makes sure the length of each lane is the same
    // and that each lane is broad enough to hold its subgraph
    function PoolLayout() {
      go.GridLayout.call(this);
      this.MINLENGTH = 200;  // this controls the minimum length of any swimlane
      this.MINBREADTH = 100;  // this controls the minimum breadth of any non-collapsed swimlane
      this.cellSize = new go.Size(1, 1);
      this.wrappingColumn = Infinity;
      this.wrappingWidth = Infinity;
      this.spacing = new go.Size(0, 0);
      this.alignment = go.GridLayout.Position;
    }
    go.Diagram.inherit(PoolLayout, go.GridLayout);

    PoolLayout.prototype.doLayout = function(coll) {
      var diagram = this.diagram;
      if (diagram === null) return;
      diagram.startTransaction("PoolLayout");
      // make sure all of the Group Shapes are big enough
      var minlen = this.computeMinPoolLength();
      var lay = this;
      diagram.findTopLevelGroups().each(function(lane) {
        if (!(lane instanceof go.Group)) return;
        var shape = lane.selectionObject;
        if (shape !== null) {  // change the desiredSize to be big enough in both directions
          var sz = lay.computeLaneSize(lane);
          shape.width = (!isNaN(shape.width)) ? Math.max(shape.width, sz.width) : sz.width;
          // if you want the height of all of the lanes to shrink as the maximum needed height decreases:
          shape.height = minlen;
          // if you want the height of all of the lanes to remain at the maximum height ever needed:
          //shape.height = (isNaN(shape.height) ? minlen : Math.max(shape.height, minlen));
          var cell = lane.resizeCellSize;
          if (!isNaN(shape.width) && !isNaN(cell.width) && cell.width > 0) shape.width = Math.ceil(shape.width / cell.width) * cell.width;
          if (!isNaN(shape.height) && !isNaN(cell.height) && cell.height > 0) shape.height = Math.ceil(shape.height / cell.height) * cell.height;
        }
      });
      // now do all of the usual stuff, according to whatever properties have been set on this GridLayout
      go.GridLayout.prototype.doLayout.call(this, coll);
      diagram.commitTransaction("PoolLayout");
    };

    // compute the minimum length of the whole diagram needed to hold all of the Lane Groups
    PoolLayout.prototype.computeMinPoolLength = function() {
      var len = this.MINLENGTH;
      myDiagram.findTopLevelGroups().each(function(lane) {
        var holder = lane.placeholder;
        if (holder !== null) {
          var sz = holder.actualBounds;
          len = Math.max(len, sz.height);
        }
      });
      return len;
    }

    // compute the minimum size for a particular Lane Group
    PoolLayout.prototype.computeLaneSize = function(lane) {
      // assert(lane instanceof go.Group);
      var sz = new go.Size(lane.isSubGraphExpanded ? this.MINBREADTH : 1, this.MINLENGTH);
      if (lane.isSubGraphExpanded) {
        var holder = lane.placeholder;
        if (holder !== null) {
          var hsz = holder.actualBounds;
          sz.width = Math.max(sz.width, hsz.width);
        }
      }
      // minimum breadth needs to be big enough to hold the header
      var hdr = lane.findObject("HEADER");
      if (hdr !== null) sz.width = Math.max(sz.width, hdr.actualBounds.width);
      return sz;
    }
    // end PoolLayout class


    function init() {
      if (window.goSamples) goSamples();  // init for these samples -- you don't need to call this
      var $ = go.GraphObject.make;

      myDiagram =
        $(go.Diagram, "myDiagramDiv",
          {
            // make sure the top-left corner of the viewport is occupied
            contentAlignment: go.Spot.TopLeft,
            // use a simple layout to stack the top-level Groups next to each other
            layout: $(PoolLayout),
            // disallow nodes to be dragged to the diagram's background
            mouseDrop: function(e) {
              e.diagram.currentTool.doCancel();
            },
            // a clipboard copied node is pasted into the original node's group (i.e. lane).
            "commandHandler.copiesGroupKey": true,
            // automatically re-layout the swim lanes after dragging the selection
            "SelectionMoved": relayoutDiagram,  // this DiagramEvent listener is
            "SelectionCopied": relayoutDiagram, // defined above
            "undoManager.isEnabled": true,
            // allow TextEditingTool to start without selecting first
            "textEditingTool.starting": go.TextEditingTool.SingleClick
          });

      // Customize the dragging tool:
      // When dragging a node set its opacity to 0.6 and move it to be in front of other nodes
      myDiagram.toolManager.draggingTool.doActivate = function() {
        go.DraggingTool.prototype.doActivate.call(this);
        this.currentPart.opacity = 0.6;
        this.currentPart.layerName = "Foreground";
      }
      myDiagram.toolManager.draggingTool.doDeactivate = function() {
        this.currentPart.opacity = 1;
        this.currentPart.layerName = "";
        go.DraggingTool.prototype.doDeactivate.call(this);
      }

      // this is called after nodes have been moved
      function relayoutDiagram() {
        myDiagram.selection.each(function(n) { n.invalidateLayout(); });
        myDiagram.layoutDiagram();
      }

      // There are only three note colors by default, blue, red, and yellow but you could add more here:
      var noteColors = ['#009CCC', '#CC293D', '#FFD700'];
      function getNoteColor(num) {
        return noteColors[Math.min(num, noteColors.length - 1)];
      }

      myDiagram.nodeTemplate =
        $(go.Node, "Horizontal",
          new go.Binding("location", "loc", go.Point.parse).makeTwoWay(go.Point.stringify),
          $(go.Shape, "Rectangle", {
            fill: '#009CCC', strokeWidth: 1, stroke: '#009CCC',
            width: 6, stretch: go.GraphObject.Vertical, alignment: go.Spot.Left,
            // if a user clicks the colored portion of a node, cycle through colors
            click: function(e, obj) {
              myDiagram.startTransaction("Update node color");
              var newColor = parseInt(obj.part.data.color) + 1;
              if (newColor > noteColors.length - 1) newColor = 0;
              myDiagram.model.setDataProperty(obj.part.data, "color", newColor);
              myDiagram.commitTransaction("Update node color");
            }
          },
            new go.Binding("fill", "color", getNoteColor),
            new go.Binding("stroke", "color", getNoteColor)
          ),
          $(go.Panel, "Auto",
            $(go.Shape, "Rectangle", { fill: "white", stroke: '#CCCCCC' }),
            $(go.Panel, "Table",
              { width: 130, minSize: new go.Size(NaN, 50) },
              $(go.TextBlock,
                {
                  name: 'TEXT',
                  margin: 6, font: '11px Lato, sans-serif', editable: true,
                  stroke: "#000", maxSize: new go.Size(130, NaN),
                  alignment: go.Spot.TopLeft
                },
                new go.Binding("text", "text").makeTwoWay())
            )
          )
        );

      // unmovable node that acts as a button
      myDiagram.nodeTemplateMap.add('newbutton',
        $(go.Node, "Horizontal",
          new go.Binding("location", "loc", go.Point.parse).makeTwoWay(go.Point.stringify),
          {
            selectable: false,
            click: function(e, node) {
              myDiagram.startTransaction('add node');
              var newdata = { group: "Problems", loc: "0 50", text: "New item " + node.containingGroup.memberParts.count, color: 0 };
              myDiagram.model.addNodeData(newdata);
              myDiagram.commitTransaction('add node');
              var node = myDiagram.findNodeForData(newdata);
              myDiagram.select(node);
              myDiagram.commandHandler.editTextBlock();
            },
            background: 'white'
          },
          $(go.Panel, "Auto",
            $(go.Shape, "Rectangle", { strokeWidth: 0, stroke: null, fill: '#6FB583' }),
            $(go.Shape, "PlusLine", { margin: 6, strokeWidth: 2, width: 12, height: 12, stroke: 'white', background: '#6FB583' })
          ),
          $(go.TextBlock, "New item", { font: '10px Lato, sans-serif', margin: 6, })
        )
      );

      // While dragging, highlight the dragged-over group
      function highlightGroup(grp, show) {
        if (show) {
          var part = myDiagram.toolManager.draggingTool.currentPart;
          if (part.containingGroup !== grp) {
            grp.isHighlighted = true;
            return;
          }
        }
        grp.isHighlighted = false;
      }

      myDiagram.groupTemplate =
        $(go.Group, "Vertical",
          {
            selectable: false,
            selectionObjectName: "SHAPE", // even though its not selectable, this is used in the layout
            layerName: "Background",  // all lanes are always behind all nodes and links
            layout: $(go.GridLayout,  // automatically lay out the lane's subgraph
              {
                wrappingColumn: 1,
                cellSize: new go.Size(1, 1),
                spacing: new go.Size(5, 5),
                alignment: go.GridLayout.Position,
                comparer: function(a, b) {  // can re-order tasks within a lane
                  var ay = a.location.y;
                  var by = b.location.y;
                  if (isNaN(ay) || isNaN(by)) return 0;
                  if (ay < by) return -1;
                  if (ay > by) return 1;
                  return 0;
                }
              }),
            click: function(e, grp) {  // allow simple click on group to clear selection
              if (!e.shift && !e.control && !e.meta) e.diagram.clearSelection();
            },
            computesBoundsAfterDrag: true,  // needed to prevent recomputing Group.placeholder bounds too soon
            handlesDragDropForMembers: true,  // don't need to define handlers on member Nodes and Links
            mouseDragEnter: function(e, grp, prev) { highlightGroup(grp, true); },
            mouseDragLeave: function(e, grp, next) { highlightGroup(grp, false); },
            mouseDrop: function(e, grp) {  // dropping a copy of some Nodes and Links onto this Group adds them to this Group
              // don't allow drag-and-dropping a mix of regular Nodes and Groups
              if (e.diagram.selection.all(function(n) { return !(n instanceof go.Group); })) {
                var ok = grp.addMembers(grp.diagram.selection, true);
                if (!ok) grp.diagram.currentTool.doCancel();
              }
            },
            subGraphExpandedChanged: function(grp) {
              var shp = grp.selectionObject;
              if (grp.diagram.undoManager.isUndoingRedoing) return;
              if (grp.isSubGraphExpanded) {
                shp.width = grp._savedBreadth;
              } else {  // remember the original width
                grp._savedBreadth = shp.width;
                shp.width = NaN;
              }
            }
          },
          new go.Binding("location", "loc", go.Point.parse).makeTwoWay(go.Point.stringify),
          new go.Binding("isSubGraphExpanded", "expanded").makeTwoWay(),
          // the lane header consisting of a TextBlock and an expander button
          $(go.Panel, "Horizontal",
            { name: "HEADER", alignment: go.Spot.Left },
            $("SubGraphExpanderButton", { margin: 5 }),  // this remains always visible
            $(go.TextBlock,  // the lane label
              { font: "15px Lato, sans-serif", editable: true, margin: new go.Margin(2, 0, 0, 0) },
              // this is hidden when the swimlane is collapsed
              new go.Binding("visible", "isSubGraphExpanded").ofObject(),
              new go.Binding("text").makeTwoWay())
          ),  // end Horizontal Panel
          $(go.Panel, "Auto",  // the lane consisting of a background Shape and a Placeholder representing the subgraph
            $(go.Shape, "Rectangle",  // this is the resized object
              { name: "SHAPE", fill: "#F1F1F1", stroke: null, strokeWidth: 4 },  // strokeWidth controls space between lanes
              new go.Binding("fill", "isHighlighted", function(h) { return h ? "#D6D6D6" : "#F1F1F1"; }).ofObject(),
              new go.Binding("desiredSize", "size", go.Size.parse).makeTwoWay(go.Size.stringify)),
            $(go.Placeholder,
              { padding: 12, alignment: go.Spot.TopLeft }),
            $(go.TextBlock,  // this TextBlock is only seen when the swimlane is collapsed
              {
                name: "LABEL", font: "15px Lato, sans-serif", editable: true,
                angle: 90, alignment: go.Spot.TopLeft, margin: new go.Margin(4, 0, 0, 2)
              },
              new go.Binding("visible", "isSubGraphExpanded", function(e) { return !e; }).ofObject(),
              new go.Binding("text").makeTwoWay())
          )  // end Auto Panel
        );  // end Group

      // Set up an unmodeled Part as a legend, and place it directly on the diagram.
      myDiagram.add(
        $(go.Part, "Table",
          { position: new go.Point(10, 10), selectable: false },
          $(go.TextBlock, "Key",
            { row: 0, font: "700 14px Droid Serif, sans-serif" }),  // end row 0
          $(go.Panel, "Horizontal",
            { row: 1, alignment: go.Spot.Left },
            $(go.Shape, "Rectangle",
              { desiredSize: new go.Size(10, 10), fill: '#CC293D', margin: 5 }),
            $(go.TextBlock, "Halted",
              { font: "700 13px Droid Serif, sans-serif" })
          ),  // end row 1
          $(go.Panel, "Horizontal",
            { row: 2, alignment: go.Spot.Left },
            $(go.Shape, "Rectangle",
              { desiredSize: new go.Size(10, 10), fill: '#FFD700', margin: 5 }),
            $(go.TextBlock, "In Progress",
              { font: "700 13px Droid Serif, sans-serif" })
          ),  // end row 2
          $(go.Panel, "Horizontal",
            { row: 3, alignment: go.Spot.Left },
            $(go.Shape, "Rectangle",
              { desiredSize: new go.Size(10, 10), fill: '#009CCC', margin: 5 }),
            $(go.TextBlock, "Completed",
              { font: "700 13px Droid Serif, sans-serif" })
          )  // end row 3
        ));

      load();

    }  // end init

    // Show the diagram's model in JSON format
    function save() {
      document.getElementById("mySavedModel").value = myDiagram.model.toJson();
      myDiagram.isModified = false;
    }
    function load() {
      myDiagram.model = go.Model.fromJson(document.getElementById("mySavedModel").value);
    }
  </script>
</head>
<body onload="init()">
<div id="sample">
  <div id="myDiagramDiv" style="border: solid 1px black; width:100%; height:500px;"></div>
  <p>A Kanban board is a work and workflow visualization used to communicate the status and progress of work items. Click on the color of a note to cycle through colors.</p>
  <p>
    This design and implementation were adapted from the <a href="swimLanesVertical.html">Swim Lanes (vertical)</a> sample.
    Unlike that sample:
    <ul>
      <li>there are no Links</li>
      <li>lanes cannot be nested into "pools"</li>
      <li>lanes cannot be resized</li>
      <li>the user cannot drop tasks into the diagram's background</li>
      <li>all tasks are ordered within a single column; the user can rearrange the order</li>
      <li>tasks can freely be moved into other lanes</li>
      <li>lanes are not movable or copyable or deletable</li>
    </ul>
  </p>
  <button id="SaveButton" onclick="save()">Save</button>
  <button onclick="load()">Load</button>
  Diagram Model saved in JSON format:
  <br />
  <textarea id="mySavedModel" style="width:100%;height:300px">
{ "class": "go.GraphLinksModel",
  "nodeDataArray": [
{"key":"Problems", "text":"Problems", "isGroup":true, "loc":"0 23.52284749830794" },
{"key":"Reproduced", "text":"Reproduced", "isGroup":true, "color":"0", "loc":"109 23.52284749830794" },
{"key":"Identified", "text":"Identified", "isGroup":true, "color":"0", "loc":"235 23.52284749830794" },
{"key":"Fixing", "text":"Fixing", "isGroup":true, "color":"0", "loc":"343 23.52284749830794" },
{"key":"Reviewing", "text":"Reviewing", "isGroup":true, "color":"0", "loc":"451 23.52284749830794"},
{"key":"Testing", "text":"Testing", "isGroup":true, "color":"0", "loc":"562 23.52284749830794" },
{"key":"Customer", "text":"Customer", "isGroup":true, "color":"0", "loc":"671 23.52284749830794" },
{"key":-1, "group":"Problems", "category":"newbutton",  "loc":"12 35.52284749830794" },
{"key":1, "text":"text for oneA", "group":"Problems", "color":"0", "loc":"12 35.52284749830794"},
{"key":2, "text":"text for oneB", "group":"Problems", "color":"1", "loc":"12 65.52284749830794"},
{"key":3, "text":"text for oneC", "group":"Problems", "color":"0", "loc":"12 95.52284749830794"},
{"key":4, "text":"text for oneD", "group":"Problems", "color":"1", "loc":"12 125.52284749830794"},
{"key":5, "text":"text for twoA", "group":"Reproduced", "color":"1", "loc":"121 35.52284749830794"},
{"key":6, "text":"text for twoB", "group":"Reproduced", "color":"1", "loc":"121 65.52284749830794"},
{"key":7, "text":"text for twoC", "group":"Identified", "color":"0", "loc":"247 35.52284749830794"},
{"key":8, "text":"text for twoD", "group":"Fixing", "color":"0", "loc":"355 35.52284749830794"},
{"key":9, "text":"text for twoE", "group":"Reviewing", "color":"0", "loc":"463 35.52284749830794"},
{"key":10, "text":"text for twoF", "group":"Reviewing", "color":"1", "loc":"463 65.52284749830794"},
{"key":11, "text":"text for twoG", "group":"Testing", "color":"0", "loc":"574 35.52284749830794"},
{"key":12, "text":"text for fourA", "group":"Customer", "color":"1", "loc":"683 35.52284749830794"},
{"key":13, "text":"text for fourB", "group":"Customer", "color":"1", "loc":"683 65.52284749830794"},
{"key":14, "text":"text for fourC", "group":"Customer", "color":"1", "loc":"683 95.52284749830794"},
{"key":15, "text":"text for fourD", "group":"Customer", "color":"0", "loc":"683 125.52284749830794"},
{"key":16, "text":"text for fiveA", "group":"Customer", "color":"0", "loc":"683 155.52284749830795"}
],
  "linkDataArray": []}
  </textarea>
</div>
</body>
</html>